Ink-eraser



W. L. GUNDLACH.

INK ERASER.

No. 425,783. l Patented Apr. 15, 1890.

C C? i www@ -N Bf uw UNITED STATES PATENT OFFICE.

VILLIAM L. GUNDLACH, OF LAKE MILLS, IOVA.

INK-ERASER.l

SPECIFICATION forming part of Letters Patent No. 425,783, dated April 15, 1890.

Application filed February 12, 1889. Serial No. 299,587. (No model.)

T0 all whom it'may con/cern:

Be it known that I, WILLIAM L. GUNDLACH, of Lake Mills, in the county of Winnebago and State of Iowa, have invented a new and Improved Ink-Eraser, of which the following is a specification, reference being had to the annexed drawings, forming a part thereof, in Which- Figure l is a perspective View showing my improved ink-eraser in use. Fig. 2 is a longitudinal section of one form of my inkeraser. Fig. 3 is a side elevation, partly in section, of a modified form; and Fig. 4 is a transverse section taken on line t in Fig. 2.

Similar letters of reference indicate corresponding parts in all the views.

The object of my invention is to provide a simple and effective device for quickly erasing ink and other blots and stains from paper and other fabrics.

My invention consists of a double tubular reservoir formed either of a single tube with a central partition, or of two closed tubes arranged with their closed ends in contact and provided with a wrapping of paper or other suitable material, for holding them in proper relation to each other.

The invention also consists in the combination, with the open ends of the tubes, of a flexible tube and a perforated point for applying the contents of the tube. It also further consists in the combination, with the tube, of a solution of chlorinated lime placed in one compartment of the tube and an acid placed in the other part.

The tube A, forming the body of my improved reservoir, is divided by a central partition a, and is provided on opposite ends with short sections B B of iexible rubber tubing, which are stretched-over the ends of the tube A, and in which are inserted the conical perforated points b b. The central partition a divides the tube A intothe compartments c c. The compartment c is filled with a solution of chlorinated lime, and the compartment c is filled with an acid, such as dilute sulphuric acid.

In use the point b is first applied to the stain or blot in the manner indicated in Fig.

l. A slight pressure of the point upon the stain causes the inward movement of the rubber tube B to displace some of the liquid and force it upon the blot. Vhen withdrawing the point b, the pressure upon the tube-section B being released, the surplus liquid upon the paper or fabric is drawn back into the tube A by the partial vacuum formed by the return of the tube B to its normal shape. The tube A is then reversed, and a small quantity of the acid contained in the compartment c is forced out upon the surface moistened with the chlorinated lime, and the surplus acid is drawn back into the compartment in the manner already described in the case of the chlorinated-lime solution.

` The advantages I claim for this instrument over others for the same purpose are that I have both the necessary ingredients in a single instrument. The instrument is in the shape of a pencil, and may be readily carried in the pocket or kept on the desk Without danger of the fluid being spilled. It is always ready for use Without any preliminary preparations, such as the uncorking of two vials.

By means of the elastic diaphragms I can regulate the quantity of fluid to be applied, and if too much fluid escapes Vby the action of the diaphragm, as above described, any excess will be drawn back into the instrument without any effort on the part of the operator. By means of the ine point or tube I can apply the fluid exactly where it is wanted, being thus enabled to erase one letter of a word, if necessary. The point serves as a stopper that may be readily inserted or removed, and when the fluid becomes exhausted the instrument can easily be refilled.

It is of course immaterial in the manufacture of the instrument whether the two compartments are formed in a single tube and separated by a partition, as in Fig. 2, or whether, as in Fig. 3,' two `tubes A A2, closed at their adjoining ends and held in proper relation to each other by wrapping-paper or other suitable material, are employed.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In an ink-eraser, the combination, with a rigid tube having two compartments, of sections of iiexibie rubber tube applied to the ends of the rigid tube, and apertured conical 5 points inserted in the rubber tubes, substantially as specified.

2. In an ink-eraser, a tube provided with two compartments, one containing a chlorinated1ime solution and the othera dilute acid, substantially as specied.

VILLIAM L. GUNDLACH. Vitnesses: f

- C. D. WILLIAMS, J. C. WILLIAMS. 

